Baloney! Its a very hush-hush craft first developed at Lockheed's Skunk Works. If so, It would be very dangerous for any individual to poke their nose into its capabilities, builders, or purpose. I believe it could be a a system that develops a huge magnetic field sufficient to pull a large enemy submarine right out of the water! it would then be attached under the cabin and dragged to port where American engineers could dismantle it. On the otherhand, it could be a boat that drops a net and catches a load of fish which it then hoists up to the main cabin. Perhaps it was designed to skim over the water like a water bug which uses surface tension to say agloat.
It is also possible that D76 is rightand it is a new invention.
MamaMoose